LEASES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Leases [Abstract]
Right-of-use operating lease assets	$ 227,059		$ 227,059		$ 241,342
Operating Lease, Liability, Current	35,176		35,176		38,296
Right-of-use operating lease liability	244,317		244,317		257,424
Finance Lease, Right-of-Use Asset	251,092		251,092		170,155
Finance Lease, Liability, Current	99,334		99,334		63,454
Finance Lease, Liability, Noncurrent	107,754		107,754		$ 96,183
Finance Lease, Right-of-Use Asset, Amortization	16,404	$ 8,898	40,716	$ 20,318
Finance Lease, Interest Expense	2,373	1,820	6,595	4,324
Finance Lease, Cost	18,777	10,718	47,311	24,642
Finance And Operating Lease, Lessee Expense	$ 32,919	$ 25,365	89,999	69,142
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			17,373	20,163
Finance Lease, Interest Payment on Liability			6,595	4,324
Operating Lease, Payments			$ 45,361	$ 47,958
Operating Lease, Weighted Average Remaining Lease Term	8 years 7 months 6 days	9 years 3 months 18 days	8 years 7 months 6 days	9 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term	2 years 2 months 12 days	2 years 9 months 18 days	2 years 2 months 12 days	2 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	5.55%	5.80%	5.55%	5.80%
Finance Lease, Weighted Average Discount Rate, Percent	4.77%	5.42%	4.77%	5.42%